Extranodal natural killer (NK)/T-cell lymphoma (ENKTL), nasal type, is a distinct and heterogeneous histopathologic subtype of non-Hodgkin lymphoma (NHL), accounting for 5%~10%. The frequency of ENKTL among NHL patients is significantly higher in Asia than in Western countries. Despite radiotherapy and chemotherapy, the prognosis for ENKTL patients is poor, with 5-year median survival time for primary nasal site was 5 years, for non-nasal extranodal sites 6 months. ENKTL is so aggressive and has high mortality rate and till now there is no standard therapy. In recent years SMILE chemotherapy has clinical efficacy and is one of first line therapy for ENKTL. However it is apparent that this regimen is extremely toxic with grade 4 neutropenia especially for Asian patients. On these grounds, new therapy MESA is used for Asian patients with ENKTL in order to achieve good efficacy and safety.